The BP1500BW150-4-0S from R & K Company Limited is a Band Pass Filter with Frequency 1.425 to 1.575 GHz, Center Frequency 1.5 GHz, Insertion Loss 1.5 dB, Rejection 40 to 50 dB, Power 2 W. Tags: Module with Connectors. More details for BP1500BW150-4-0S can be seen below.